Heat Advisory
Status
Event Continued Active alertStart Time
Sat 06/21/2025 11:00 AM EDTEnd Time
Tue 06/24/2025 01:00 AM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Aurora, IL ∙ Naperville, IL ∙ Joliet, IL ∙ Rockford, IL ∙ Elgin, IL ∙ Waukegan, IL ∙ Gary, IN ∙ Bolingbrook, IL ∙ Hammond, IN ∙ Wheaton, ILFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Chicago IL 925 PM CDT Fri Jun 20 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM CDT /11 AM EDT/ SATURDAY TO MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... * WHAT...Heat index values around 105 degrees expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 10 AM CDT /11 AM EDT/ Saturday to midnight CDT /1 AM EDT/ Monday Night. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Heat impacts will be worsened by consecutive days of hot and humid conditions, with overnight lows in the mid 70s providing little relief. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Monitor the latest forecasts and warnings for updates.
Technical Header
ILZ003>006-008-010>013-019>021-023-032-033-039-106>108-INZ001-002- 010-011-019-211230- /O.CON.KLOT.HT.Y.0001.250621T1500Z-250624T0500Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper- Benton- Including the cities of Crystal Lake, Rensselaer, DeMotte, McHenry, DeKalb, Mundelein, Naperville, Pontiac, Fairbury, Plano, Bourbonnais, Crete, Byron, Peotone, Paxton, Woodstock, Aurora, Kentland, Chesterton, Watseka, Elgin, Gary, Wheaton, Gibson City, Lombard, Algonquin, Kankakee, Mokena, Channahon, Beecher, Coal City, Ottawa, Carol Stream, Minooka, Oxford, Dwight, Gilman, Belvidere, Gurnee, Yorkville, Morris, Streator, Manhattan, Buffalo Grove, Valparaiso, Morocco, Dixon, Sycamore, Mendota, Downers Grove, Waukegan, Plainfield, Hammond, Merrillville, Rochelle, Bradley, La Salle, Oswego, Bolingbrook, Wilmington, Portage, Fowler, Rockford, Roselawn, Joliet, Marseilles, and Oregon 925 PM CDT Fri Jun 20 2025 /1025 PM EDT Fri Jun 20 2025/
